What are some common issues with PHP versions when it comes to handling arrays and newer features like anonymous functions, and how can they be addressed?

One common issue with older PHP versions is the lack of support for newer features like anonymous functions when handling arrays. To address this, you can use traditional callback functions instead of anonymous functions. 

// Using traditional callback functions instead of anonymous functions
$numbers = [1, 2, 3, 4, 5];

// Old way of using array_map with a named function
function square($num) {
    return $num * $num;
}

$squaredNumbers = array_map('square', $numbers);
print_r($squaredNumbers);

Keywords

PHP versions arrays anonymous functions backward compatibility error handling

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